C2D Multiplier

[daverimer]

Quick question:

Is there anything wrong with reducing the multiplier on an E6400 from 8x --> 7x?

Obviously doing so would pretty much limit its potential for overclocking to that of an E6300. Anything else? :?

 

[Assman]

nothing wrong with that besides the point that you've mentioned. just out of curiosity why are you planning to lower mult.?

 

[daverimer]

Thanks for your reply.

My hope was to get the fsb up to 400mhz, like you, but I couldn't get it to stay there stable. I bought a fan to cool my nb heatsink (mb is a gigabyte DS3), and I was going to replace the thermal pad with some other TIM. Unfortunately, I broke my hand and have a full hand cast on for a few weeks. So working in my case isn't really an option until the cast comes off.

So I ideally wanted to run the ram and fsb at 1:1 ratio which I can do easily at multiplier 7x. I could have spent ~$50 less on an E6300 to do this. I'll just have to wait a month to mess around with everything :x

 

[Assman]

i see, have you tried upping vcore by a notch? mine's @ 1.3875

 

[daverimer]

Yeah I upped the vcore. I started getting errors in prime with vcore around 1.4v and fsb around 385mhz.

I'm so close to 400mhz fsb, with some more tweaking I should hit it and be stable in testing.

How have you tested your system for stability? and how has it done?

 

[Assman]

14.5 hrs of prime95 (dual instances), inteltat all pass and stable :lol:

 

[daverimer]

cool, nice job. Ya like I said I'm kinda on the computer DL right now so things will be on hold for a month. Thanks for your help!

 

[Assman]

no problem.

 

[locky28]

Dave, you seem to have a lot more of a clue then some of the other newbies we have around here, well done and hope you stick around.

Hey assman about the stability test, I haven't got my ballistix in the mail yet so I'm just using borrowed generic Ram and haven't over clocked yet, but I was running stability tests at stock speed and P95x2 was fine after a day but how long do you run TAT and at what settings to confirm stability? I left TAT on for a night on both cores and by the morning my PC had restarted, check syslogs and it happened around 2am which is pretty good I thought

 

[Assman]

i ran tat just to see my 100% load temps, for stability i used dual instances of prime95 (12hrs+ is recommended).
here's a guide on how to set up prime to stress two cores.

 

[locky28]

Thanks, yeah I know how to run dual prime, I just wanted to know if you used TAT as a stability benchmark over a period of time or just as a way of checking max load temps but I see you just use it for temperatures.

 

[sirrobin4ever]

There is also a rather useful utility called Orthos that runs dual instances of prime, if you didn't already know. (Which you probably already did...but I found it mentioning )

 

[Assman]

yeah, orthos is very "good" too, but i used prime

 

[locky28]

I've seen ortho's mentioned in O/C guides but I've never used or even had a look at it, P95's always worked for me anyway.

 

[RJ]

Quick question:

Is there anything wrong with reducing the multiplier on an E6400 from 8x --> 7x?

Obviously doing so would pretty much limit its potential for overclocking to that of an E6300. Anything else? :?

You may want to read the link in my sig if you're running a P965 chipset.

 

[RJ]

Thanks for your reply.

My hope was to get the fsb up to 400mhz, like you, but I couldn't get it to stay there stable. I bought a fan to cool my nb heatsink (mb is a gigabyte DS3), and I was going to replace the thermal pad with some other TIM. Unfortunately, I broke my hand and have a full hand cast on for a few weeks. So working in my case isn't really an option until the cast comes off.

So I ideally wanted to run the ram and fsb at 1:1 ratio which I can do easily at multiplier 7x. I could have spent ~$50 less on an E6300 to do this. I'll just have to wait a month to mess around with everything :x

Ah...DS3.....965

bump to 405mhz and see what that gets you.

 

[daverimer]

Thanks RJ. I'll give that a try in the near future.

 

[techgeek]

Just FYI, Othoros is Prime95 with a simple GUI wrapper. It also runs two instances of Prime without the hassle. Other than that, no difference really.

 

[locky28]

Ahh I see that explains what everyone means thanks geek.